Abstract: A generator assembly includes a generator shaft defining an interior vent space. A valve assembly is positioned within the vent space configured to selectively allow venting of air through the generator shaft. A radial vent is positioned within the valve assembly configured to prevent oil from flowing through the vent space during operation and release air through the vent space during shutdown.

Abstract: There is provided an axial flux motor comprising one or more rotating disks (10) and a stator (20) comprising a cavity (30) formed between walls (40a, 40b) and containing therein more than one electro-magnetic coil assembly (50). Each electro-magnetic coil assembly (50) comprises more than one pole piece (60), each having an axially extending shank portion (70a) and first and second radially extending end shoes (72a, 72b) and one or more associated coils (55), each of the one or more associated coils (55) being wound around a shank portion (70a), wherein said outer surface (75) of said end shoes are preferably joined to one or other of said walls (40a, 40b).

Abstract: A positive connection plate of a DC motor includes a fitting groove to enable assembling a specific brush holder thereto. The specific brush holder includes a convex part that fits in the fitting groove and a stepped surface having a step at a radially outer side of the convex part, and located at the opposite-core side of its armature from a core-side end surface of the convex part. A space existing in an axial stepped area which is located at the core side from the stepped surface and in which the step is formed is a stepped space. A drawing member is drawn from a position which circumferentially overlaps with the specific brush holder to the outside of a motor case, and is disposed so as to overlap with the stepped space in the axial direction.

Abstract: A generator motor includes a stator, a rotor that rotates relative to the stator, and a motor housing that houses the stator and the rotor. The motor housing includes a housing main body that encloses a periphery of the stator and the rotor and a cover that is attached to an end surface of the housing main body so as to cover an opening formed on the end surface, which is on an opposite side to an engine, of the housing main body. A drain hole for draining water inside the motor housing to below the motor housing is formed between a lower end of the cover and the end surface of the housing main body. The motor housing includes a covered section that covers the drain hole from below at a position that is lower than the drain hole.

Abstract: An electric motor for driving a motor vehicle component, in particular a fan impeller for cooling cooling water, having an electronics unit that includes a lead frame around which injection-molded plastic is provided and which has a current path conducting the motor current, and having two spaced-apart current path ends that form an interruption point bridged by a thermal fuse in the form of a spring-biased contact bridge. The contact bridge is mounted so as to be pivotable about an axis of rotation extending perpendicular to the plane of the interruption point. An abutment contour, against which the contact bridge pivots as a result of the restoring force of a spring element when the thermal fuse is triggered, limits the pivoting range of the contact bridge.

Abstract: A rotor (12) includes i) a stacked body (24) in which a plurality of holed steel plates (28a, 28b) provided with holes (29, 30) punched out of insulation coated steel plates are stacked together, and that includes a plurality of magnet holes (34) each of which is provided by the plurality of holes (29, 30) being connected together in an axial direction, and ii) a plurality of magnets (31n, 31s), at least one of which is arranged in each of the magnet holes (34).

Abstract: An axial flux electrical machine includes a housing having a center portion with a cylindrical wall, a stator assembly attached to the housing, a bearing assembly attached to the stator assembly, and a rotor assembly rotatably attached to the bearing assembly. A bearing mount system includes a bearing isolator that is attached to the wall of the housing, and a bearing cup that is attached to the bearing assembly and the bearing isolator.

Abstract: Provided is an electric motor capable of stabilizing a preload applied to a bearing by an annular spring and effectively retarding degradation of the annular spring. The electric motor includes a motor shaft, a rotor, a stator, a housing containing the rotor and the stator in a posture where the motor shaft extends vertically, an upper bearing and a lower bearing supporting the motor shaft, and an annular spring applying a downward preload to the upper bearing. The lower bearing is fixed to the motor shaft and the housing. The housing has a load-receiving surface receiving an upward thrust load overcoming the preload from the upper bearing.

Abstract: The present invention relates to a direct cooling type handpiece, and more particularly, to a direct cooling type handpiece that is configured to allow an outer housing and a core to be spaced apart from each other and thus to allow the core to be fixed to a PCB and a support cap, so that air flows to the space between the outer housing and the core, thus efficiently cooling the high heat generated from the handpiece while the handpiece is being operated.

Abstract: A vehicle drive device that includes a rotary electric machine; a transmission device that is disposed side by side with the rotary electric machine in an axial direction thereof; a differential gear device that has a rotation-axial center substantially parallel to that of the transmission device, and is disposed on an axis other than that of the transmission device; and an inverter device that includes a capacitor that smooths direct-current power and a conversion unit that performs direct current/alternating current conversion, and controls the rotary electric machine.

Abstract: An electric motor is provided. The rotor includes a rotor shaft, with a bearing rotatably supporting the rotor shaft. A bearing housing is interposed between the bearing and the motor frame assembly. The bearing housing is releasably connected to the motor frame assembly so as to be selectively secured in supporting relationship with the bearing and thereby the rotor. The motor frame assembly includes a circumferentially extending support face. The bearing housing presents a circumferentially extending engagement face which engages the support face when the bearing housing is in the supporting relationship. At least one of the faces is axially tapered to facilitate axial movement of the bearing into the supporting relationship.

Abstract: A stator fixing structure includes a tube and a fixing member. The tube has an outer surface, and both a stator set and the fixing member are fitted around the tube in a bottom-up sequence. The fixing member has a main body, which has a contact surface and an engaging unit. The engaging unit is circumferentially extended from the main body towards a center of the main body to form a plurality of free ends to tightly press against the outer surface of the tube. The contact surface is axially tightly in contact with the stator set to prevent the stator set from sliding.

Abstract: A stator includes a stator core and an insulator installed on an axial-direction end surface of the stator core. The stator core has a cylindrical part, a plurality of teeth, and a plurality of windings. The windings are wound around the teeth. Each winding has a first end and a second end. The insulator has a plurality winding grooves to support the second ends. Each winding groove has a first space and a second space. The first space includes an opening. The second space includes a tip part to catch the second end, and communicate with the first space via a bent part.

Abstract: A double-stator rotating electric machine includes a rotor and a pair of outer and inner stators. The outer stator has a first multi-phase coil wound thereon so as to form magnetic poles upon energization of the first multi-phase coil. The inner stator has a second multi-phase coil wound thereon so as to form magnetic poles upon energization of the second multi-phase coil. The number of the magnetic poles formed by the outer stator is equal to the number of the magnetic poles formed by the inner stator. Each of the magnetic poles formed by the outer stator is located at the same circumferential position as and has an opposite polarity to a corresponding one of the magnetic poles formed by the inner stator. The rotor has yoke portions each of which radially extends so as to form a magnetic flux passage magnetically connecting the outer and inner stators.

Abstract: A coolable machine housing of an electric machine has a housing shell formed as an extruded section with integrated cooling ducts. The housing shell can be covered at the end faces by bearing end plates. The axially extending cooling ducts communicate with one another through connecting ducts. The cooling ducts in the extruded housing shell extend in pairs as cooling duct pairs between the shell end faces. The connecting ducts are boreholes that penetrate the outer wall by way of borehole openings that are closed by way of closing elements.

Abstract: A system and method for heating ferrite permanent magnets in an electrical machine is disclosed. The permanent magnet machine includes a stator assembly and a rotor assembly, with a plurality of ferrite permanent magnets disposed within the stator assembly or the rotor assembly to generate a magnetic field that interacts with a stator magnetic field to produce a torque. A controller of the electrical machine is programmed to cause a primary field current to be applied to the stator windings to generate the stator magnetic field, so as to cause the rotor assembly to rotate relative to the stator assembly. The controller is further programmed to cause a secondary current to be applied to the stator windings to selectively generate a secondary magnetic field, the secondary magnetic field inducing eddy currents in at least one of the stator assembly and the rotor assembly to heat the ferrite permanent magnets.

Abstract: An electric motor with contact commutation may include an external stator and an internal, rotatably mounted rotor. A magnet arrangement including at least one permanent magnet may be arranged fixedly on the rotor. A coil arrangement including at least one electric coil may be arranged fixedly on the stator. A contact commutation assembly may be in communication with the coil arrangement.

Abstract: A stator includes: a sensor substrate attached to one end of a stator core in an axial direction of the stator core, the sensor substrate being provided with a bearing through hole and being provided with a notch on a periphery, the notch being used for leading out a power supply lead and a sensor lead; a sensor-lead board-in connector disposed between the bearing through hole and the notch on the surface of the sensor substrate on the counter-stator side, the sensor lead being connected to the sensor-lead board-in connector; and a power-supply-lead board-in connector disposed on the surface of the sensor substrate on the counter-stator side such that the power-supply-lead board-in connector faces the sensor-lead board-in connector with the bearing through hole therebetween, the power supply lead being connected to the power-supply-lead board-in connector.

Abstract: A plasma interaction simulator is presented. The simulator magnetically induces multiple distinct flows of plasma within a physical plasma vessel. The plasma flows collide with each other at flow interaction boundaries where discontinuities arising due to differences between the flows give rise to interactions. Sensors can be incorporated into the plasma simulator to observe and collect data about the plasma flow interactions.

Abstract: A blower motor is provided for use in a machine. The motor includes a stator and a rotor rotatable about an axis. The stator includes a generally toroidal core, a first-main winding, and an auxiliary winding that is electrically out of phase with the first-main winding. The first-main winding and the auxiliary winding are both full pitch windings.